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openmpi/ompi/mpi/c/info_get_nkeys.c

71 строка
2.1 KiB
C
Исходник Обычный вид История

/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/mpi/c/bindings.h"
#include "ompi/info/info.h"
#if OMPI_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_Info_get_nkeys = PMPI_Info_get_nkeys
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/c/profile/defines.h"
#endif
static const char FUNC_NAME[] = "MPI_Info_get_nkeys";
/**
* MPI_Info_get_nkeys - Returns the number of keys defined on an
* 'MPI_Info' object
*
* @param info info object (handle)
* @param nkeys number of keys defined on 'info' (integer)
*
* @retval MPI_SUCCESS
* @retval MPI_ERR_ARG
* @retval MPI_ERR_INFO
*
* This function returns the number of elements in the list
* containing the key-value pairs
*/
int MPI_Info_get_nkeys(MPI_Info info, int *nkeys)
{
int err;
OPAL_CR_TEST_CHECKPOINT_READY();
if (MPI_PARAM_CHECK) {
OMPI_ERR_INIT_FINALIZE(FUNC_NAME);
if (NULL == info || MPI_INFO_NULL == info ||
ompi_info_is_freed(info)) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_INFO,
FUNC_NAME);
}
if (NULL == nkeys) {
return OMPI_ERRHANDLER_INVOKE(MPI_COMM_WORLD, MPI_ERR_ARG,
FUNC_NAME);
}
}
err = ompi_info_get_nkeys(info, nkeys);
OMPI_ERRHANDLER_RETURN(err, MPI_COMM_WORLD, err, FUNC_NAME);
}